Reference page — cumulative record through Thursday, October 8, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-90996
Red Hat Red Hat Enterprise Linux 10 — Sssd: sssd: denial of service in nss responder via crafted zero-length requests
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0016 4.3 —
AFFECTED
Product Versions Fixed
Red Hat Enterprise Linux 10 unspecified —
Red Hat Enterprise Linux 6 unspecified —
Red Hat Enterprise Linux 7 unspecified —
Red Hat Enterprise Linux 8 unspecified —
Red Hat Enterprise Linux 9 unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
TIMELINE
Sep 14 Reserved by redhat
Sep 14 Published (CNA: redhat)
Oct 7 EXPLOIT PUBLISHED — CVE-2026-90996 (Red Hat Enterprise Linux 10). Public exploit reference added.
Oct 7 RESCORED — CVE-2026-90996 (Red Hat Enterprise Linux 10). CVSS 4 → 5.5 (NVD).
Description
A flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero-length body to the Network Security Services (NSS) responder. This could lead to a denial-of-service condition, causing the NSS responder to become unstable or terminate. This vulnerability affects the availability of the system responder.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| September 14, 2026 | Reserved | Reserved by redhat |
| September 14, 2026 | Published | Published (CNA: redhat) |
| October 7, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-90996 (Red Hat Enterprise Linux 10). Public exploit reference added. |
| October 7, 2026 | RESCORED | RESCORED — CVE-2026-90996 (Red Hat Enterprise Linux 10). CVSS 4 → 5.5 (NVD). |
Affected
Affected products and packages — 7 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-90996 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Thursday, October 8, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
